Update gd32f1 requirement from 0.5.0 to 0.6.0

[dependabot[bot]]

Updates the requirements on gd32f1 to permit the latest version.

Changelog

Sourced from gd32f1's changelog.

[0.6.0]

• GD32E23x
  • Added DMA peripheral.
• GD32F1x0
  • Renamed various DMA registers and fields to be consistent with documentation and other series.
• GD32F20x
  • Added support for GD32F205 and GD32F207 in new gd32f2 crate.
• GD32F30x
  • Added support for GD32F303, GD32F305 and GD32F307, in new gd32f3 crate.
• Updated to svd2rust 0.24.0.

[0.5.0]

• GD32E23x
  • Added support for GD32E230 and GD32E231, in new gd32e2 crate.
• GD32F1x0
  • Renamed I2Cn.STAT0.SMBALTS to SMBALT. This matches what the documentation calls it.
• Updated to svd2rust 0.19.0.

[0.4.0]

• GD32F1x0
  • Fixed TIMERn.CTL0.CEN values, the enum values were accidentally reversed in 0.3.0.

[0.3.0]

• GD32F1x0
  • Changed various timer fields to share the same enum type.

[0.2.1]

• GD32F1x0
  • Reduced set of features for docs.rs, to hopefully fix build.

[0.2.0]

• GD32F1x0
  • Fixed TIMER PWM mode names, and added missing timer fields.
  • Split into 4 separate variants, and removed features not actually present on each variant.
  • Added CAN peripheral.
  • Added DAC peripheral.
  • Added I2C peripheral.
  • Added IVREF peripheral.
  • Added OPA peripheral.
  • Added SPI peripheral.
  • Added SYSCFG peripheral.

[0.1.0]

... (truncated)

Commits

• fcca322 Prepare for 0.6.0 release.
• d324311 Add badge to README for gd32f2.
• 68cb8de Add gd32f2 crate to CI build.
• e580b22 Update to latest version of svd2rust.
• 5f713b0 Merge pull request #30 from gd32-rust/gd32f2
• ecda10e Mention in changelog.
• 4fbf187 Add GD32F205 too.
• 9a6a79a Merge pull request #29 from gd32-rust/gd32f3
• 87639e7 USART for GD32F30x.
• 14c09de PMU for GD32F30x.
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like gd32f1 is up-to-date now, so this is no longer needed.